Started conversion of 07_invalides.py
Started conversion of 07_invalides.py

adrienpacifico/openfisca-france,SophieIPP/openfisca-france,antoinearnoud/openfisca-france,SophieIPP/openfisca-france,benjello/openfisca-france,sgmap/openfisca-france,antoinearnoud/openfisca-france,adrienpacifico/openfisca-france,sgmap/openfisca-france,benjello/openfisca-france